Valve.



J, H. HEDIVARK.

VALVE.

APrucArloN min FEB. 19. 1911s.

Patented Get. 30, 1917.

dvznesses.-

JOSEPH H. HEDMARK, or CHICAGO, ILLINOIS.

` VALVE.

neaaeoe.

vTo all 'whom t may concern.:

Be it known that I, JOSEPH H. HEDMARK,

a citizen' of the United States, residing at tors with screw stems,

Chicago, in the county of Cook and State of Illinois, have invented certain new and use-I ful Improvements in Valves, of which the following is a specification.

,In steam heating systems, it has been the common practice to use valves for the 'radiawhereby they are o ened and closed by turning a handle, and may be left partly open if desired. v A common objection to such valves is that, when vis started; to improve left partly open there is apt to be a large amount vof condensation.v in the radiators, whichinterferes with the proper working of the system; Another objection is that the turning of the screw to open av valve is a comparatively slow Iprocess and frequently requires considerable strength in order to fully close the valve.

Among the objects of the present invention; are to provide a valve which may be easily opened or closed; which must be either fully opened or fully closed; which is provided with means tending -to fully open the same after the opening movement the general construction of such valves, and' to provide such adyantages as will be more fully set forth here- Y inafter.

in one form of my invention ig'iire 1 is a longitudinal sectional view; and, j

Fig. 2 is a top view.

In accordance with `my invention the valve body 3 is provided 4with the usual seat 4 which coacts with the disk 5, such seat and disk being made in any desirable form. The body 3 is provided with an inlet 6 and outlet 7 which are threaded in the'usual manner for connection with pipes. The body 3 is also provided with an opening 8 in alinement with the inlet 6, which is threaded to receive a top or cap 9, which is provided with a packin 10 for the valve rod or stem 11, which ro is connected with the disk 5 and passes up through the top 9. A portion of the outer periphery of the top 9 is suitably shaped for engagement with a wrench, and the upper end thereof is threaded at y12. for engagement with a locking nut 13, which nut is anged to engage with the lower flanged end. of a tubular extension 14 which is provided at its In the accompanying drawings illustrat- Specication of Letters Patent.

-. ment with the center Jof the stem 11. The

cam 1'? is provided with a handle 18 whereby it may be 'readily swung on its pivot. A spring 19 is inserted between the lower end of the'enlarged portiony 16 of the valve stein, and the upper face of the top 9. In order to make this spring as strong as possible and lto confine it within a limited space longitudinally, it is preferably made in the form of a conical spiral as indicated.

' 'When the valve is to be closed, the operator swings the handle 1S over and presses to the position shown in dotted lilies in Fig. 1, which causes the cam to press the stem 11 down against the tension of the spring 19 and closes the disk 5 against the seat 4. In order that the valve will remain closed when the eccentric or lcam 17 is in the position4 indicated, the face of the cam Patented 9ct.. 30, 1917. 'Application 1ed February 19, 1914. Serial 110.819,688.

is flattened as indicated at 20, such flattened portion being in engagement with the top of the stem when order to provide for wear, or* a limited amount of compression of 'the disk member, a plurality of such flat surfaces may be provided at different distances from the axis of rotation of the cam, anotherxofsuch the valve is closed. Inl

with a threaded hole in the extension 16 and providing a locknut 22 whereby .the

valve `stem may raises up on the handle 18 until the fiat sur valve stem, when the spring 19 acting on be lengthened or shortened by adjusting the extension 16. When'thevalve is to be opened, the operator merely."

face 20 passes beyond the end of the the valve stem will cause the stem' to swing t the cam and handle upwardly to the position shown in full lines in Fig. 1. If there is any pressure against the disk 5which will ordinarily be the case, such 'pressure assists in opening the valve and it will be impossible to leave the valve in partially .a ing said disk, a top having a hole thereopened position. it will also be noted that the connection of the tubular extension or bearing 11i is such that this bearing may be turned so as to bring the handle to any desired position in a horizontal plane for convenience in operating the same. When the valve is in full open position, the top of the disk 5 may be arranged to engage with the lower face of the top 9 so as to make'an ladditional closure to prevent leakf age through the top past the valve stem.

From this description it will be readily seen that my improved valve forms an exceedingly quick opening and closing one and will insure the full opening or complete closing of the valve whenever it is operated.

Having thus described my invention, which, it will be noted maybe readily changed for different conditions, what I claim. and desire to secure by Letters Patent is: v

l. in a valve, a casing having an opening therethrough, a valve seat in said opening, a valve plug adapted to co-act with said seat, a stem connected with said plug and extending outwardly through the casing, said stem having a shoulder thereon, a spring interposed between the shoulder and the casing, tending to raise the stem to hold the valve in open position, a bearing for said stem projecting from said casing, ears extending upwardly from said bearing, and a disk eccentrically mounted in said ears and having its edge engaging with the top of the stein, said disk having its edge farthest from its fulcruin flattened to enable said valve to be locked in closed position.

2. The combination of a valye body havs eat therein, a diskpa stein for operatthrough for the stem, a bearing member extending from said top, and having a bearing at its upper end for the stem, a' cam pivotally mounted in said bearing member and engaging with the valve Stem, a handle for said cam, and a spring engaging with said stemand tending to raise the same, said cam having a iiattened portion which engages with the stem to hold theivalve in closed position, and being formed so that when the flattened portion is moved out of Lafrance engagement with the stern, the spring will throw the carn and open the valve.

3. The combination of a valve body having a seattherein, a disk, a stem for said disk, a removable top engaging with said body and having a passageway Jfor said stem, a acking around said stem, an extension rorn said top having a bearing at its upper end for the stern, a spring engaging with said top and the stem, tending to raise the stem, a cani pivotally mounted in said extension and serving to move the stein downwardly to close the valve, and a handle for said cam.

4. The combination of a valve body having a seat therein, atop for said body also having a seat thereon', a disk adapted to engage with said seats when in closed and open positions respectively, a stem engaging with said disk and passing through said top, a packing in said top for said stein, a rotatable bearing member connected with said top and engaging with the stern at its outer end, an enlarged extension on the. outer end of said stem, a spring between said extension and the top tending to open the valve, a carn pivoted in said bearing' member, and a handle for said cam whereby the cam may be turned to press the stem downwardly to close the valve and lock it in closed position.

5. In a valve, the combination of a casing having inlet and outlet apertures, a valve seat around the outlet aperture, a valve disk adapted to engage with said seat, a valve stein extending out through the casing, a tension device for engagement with said casing and stem, tending to raise the stem to open the valve, a rotatable extension projecting upwardly from the easing, bearings in the casing and in said extension for the stem, a cam pivoted in said extension above the rod and engaging therewith, said cam 4having a iattened. portion to enable the rod to be locked to hold the valve in closed position, and a handle for said cam.

JosErH H. i-iiinivniiur.j

Witnesses: i

IRENE FoRREs'r, LEE J. PrrNER. 

